I've got a ton of C code that I am converting to Python. I'm using Boost.Python until all the C code is gone (I looked at PyBind11, but one of my deployed environments is on gcc 4.7).

I've got the main C class (Game), and an interposer for talking to Python (Atlantis). I then derive a sub-class PyAtlantis:

class PyAtlantis : public Atlantis, public boost::python::wrapper<Atlantis>

I forward all the methods from Atlantis, using:

get_override("fun_name")(args)

That compiles, but at run time I get:

Traceback (most recent call last):
  File "../../atlantis.py", line 43, in <module>
    game.enableItem("sword")
Boost.Python.ArgumentError: Python argument types in
    PyAtlantis.enableItem(CAtlantis, str)
did not match C   signature:
    enableItem(PyAtlantis {lvalue}, std::string, bool)
    enableItem(PyAtlantis {lvalue}, std::string)

This is the same error I was getting when I just tried to override the functions without the wrapper...

The Python code is:

class CAtlantis(Atlantis.PyAtlantis):
    def __init__(self):
        pass

game = CAtlantis()
game.enableItem("sword")

The code is https://github.com/nedbrek/Atlantis/tree/PyAtlantis although I haven't pushed this patch yet...